Resonance Circuit Inhibiting Connector Antenna Interference
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Solution Overview
Problem
Conventional electronic devices face interference issues between high-speed connectors and antennas due to radiation noise, which complicates digital information transmission, especially in miniaturized devices, and existing solutions like shielding or wave-absorbing materials increase production costs.
Innovation Solution
A resonance circuit is integrated into the circuit board, connecting between the high-speed connector and the antenna, with a resonance frequency that covers the antenna's reception and transmission frequencies, effectively absorbing noise and reducing interference without the need for additional shielding or materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the distance between high-speed connector and antenna is increased to reduce interference, then noise interference is reduced, but device size increases
Solution Approach 1:
The patent introduces a resonance circuit as an intermediary element between the high-speed connector and the antenna. This resonance circuit acts as a mediator that absorbs electromagnetic noise at specific frequencies, preventing the noise from interfering with the antenna while maintaining a compact device layout. The resonance circuit serves as a buffer zone that resolves the spatial conflict between connector and antenna.
Solution Approach 2:
The patent utilizes parameter changes by tuning the resonance frequency of the resonance circuit to match the interfering noise frequencies from the high-speed connector. By adjusting the resonant parameters (inductance and capacitance values) of the resonance circuit, the system can selectively absorb noise at specific frequency ranges, thereby reducing interference without requiring increased physical distance.
2Object-affected harmful factors
If shielding housing or wave-absorbing material is added to block noise, then noise interference is reduced, but production cost increases
Solution Approach 1:
The patent extracts the noise filtering function from external components (shielding housing and wave-absorbing materials) and integrates it directly into the circuit board through a resonance circuit. This extraction eliminates the need for additional physical shielding components, thereby reducing material costs and simplifying the manufacturing process while maintaining effective noise reduction.
Solution Approach 2:
The resonance circuit is implemented using standard PCB trace inductors and capacitors that are inexpensive to manufacture compared to metal shielding housings or specialized wave-absorbing materials. These passive components can be easily integrated during standard PCB fabrication, significantly reducing production costs while achieving the desired noise filtering effect.
3Reliability
If resonance circuit is added to inhibit interference, then signal stability is improved, but device complexity increases
Solution Approach 1:
The patent merges the resonance circuit components (inductor and capacitor) directly into the existing PCB layout, utilizing available trace inductors and placing capacitors in proximity to the high-speed connector. This merging approach integrates the noise filtering function into the existing circuit structure without requiring separate dedicated spaces or additional complex circuit architectures, thereby minimizing the increase in device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The resonance circuit significantly reduces noise interference between high-speed connectors and antennas, improving signal stability and transmission efficiency while being more cost-effective than traditional shielding or wave-absorbing solutions.
Implementation Method 1
the resonance frequency (e.g., 2.4～2.5 GHz) of the resonance circuit covers the reception and transmission frequencies of the antenna, for effectively inhibiting interference between the connector and the antenna
Data Source
AI summary
The present invention is to provide a resonance circuit, which is applicable to a circuit board of a first electronic device provided thereon with a circuit layout, a high-speed connector (e.g., a USB 3.0 connector) at a lateral side of the circuit layout for connecting with a second electronic device, and an antenna for enabling the circuit board to receive and transmit wireless information at a predetermined frequency. The connector and antenna are respectively connected to first and second connecting points of the circuit layout, and the distance between the two connecting points is not less than one wavelength. The resonance circuit is connected to a third connecting point of the circuit layout provided between the above two connecting points, such that the resonance frequency of the resonance circuit covers the reception and transmission frequencies of the antenna, for effectively inhibiting interference between the connector and the antenna.